The where sells bagels zero $.75 each the bagel shop sells one dozen for seven dollars which is the better buy

1) in triangle the, what is the measure of angle t (in degrees)? 2) in triangle bat, the measure of angle b is 66∘, and the measure of angle t is 77∘.what is the measure of the exterior angle at a (in degrees)?

Could someone me with this question i’ve been stuck on it for 20 minutes

Y+ 2/y is it a polynomial in one variable or not? and if so, why?